Then what actual input caused the strings with the dashes in them? Are all strings with - in them a result instead of an input?

This just makes it more unclear exactly what the inputs to your problem are. You are showing sequences with dashes and sequences with only nine characters in them, in contradiction to your original problem statement. (two 10 character strings)

Please make up a test file with the *real* input sequences in it, and also show the expected output for each input.

In reply to Re^5: Filtering matches of near-perfect-matched DNA sequence pairs by Anonymous Monk
in thread Filtering matches of near-perfect-matched DNA sequence pairs by onlyIDleft

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